[PATCH 3/3] powerpc/tm: Add tm-poison test

[Michael Ellerman]

Michael Neuling <mikey at neuling.org> writes:
> From: Gustavo Romero <gromero at linux.ibm.com>
>
> Add TM selftest to check if FP or VEC register values from one process
> can leak into another process when both run on the same CPU.
>
> This tests for CVE-2019-15030 and CVE-2019-15031.
>
> Signed-off-by: Gustavo Romero <gromero at linux.ibm.com>
> Signed-off-by: Michael Neuling <mikey at neuling.org>
> ---
>  tools/testing/selftests/powerpc/tm/.gitignore |   1 +
>  tools/testing/selftests/powerpc/tm/Makefile   |   2 +-
>  .../testing/selftests/powerpc/tm/tm-poison.c  | 180 ++++++++++++++++++
>  3 files changed, 182 insertions(+), 1 deletion(-)
>  create mode 100644 tools/testing/selftests/powerpc/tm/tm-poison.c

This doesn't build on 64-bit big endian:

tm-poison.c: In function 'tm_poison_test':
tm-poison.c:118:10: error: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'uint64_t {aka long long unsigned int}' [-Werror=format=]
   printf("Unknown value %#lx leaked into f31!\n", unknown);
          ^
tm-poison.c:166:10: error: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'uint64_t {aka long long unsigned int}' [-Werror=format=]
   printf("Unknown value %#lx leaked into vr31!\n", unknown);
          ^

cheers